Apparatus for assembling piston rods and the like



AND THE UKE.

E. SCHNEIDER. APPARATUS FOR ASSEMBUNG PISTON RODS APPLIcATloN man muzi.|920.

E. SCHNEIDER.

APPARATUS FOR ASSEMBLING PISTON RODS AND THE LIKE. APPLlcAloN mtuJuLY21, m2o.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

EUGENE Sslumnna .or ma nance, Assieme T0 cui., QF .eine

i erlesene rv #Semeuse HSTON eODS me me To allv t may 09eme:

Be it known lthat I, EUQNE, SCHNEIDER, a citizen of the Republic ofFrance, resident of Paris, France, have invented new and usefullm`royerneute in Apparatus for @Lsseniblingiston Rods and thelike, whichinvention iS 11115' ,Set for Yl1 in the following Speciflcatienl Y Thevarousjdeves Aemi 10W@ hitherto for assembling the piston,` lofreciprocating @Deines-generallyemprise either' a mit in impartsassembldielong a diametrel plane hy means of-,baltsend ,enge fng the.screwthreedd portion of. ,sash mi ing two opposite scnevvthneadsadapted to screw on 1the soleWhlQatlnd enIlS :Oifth IQS A suitableWedging device actingnpon the ends the rods iand ,exteni g through thenutsl revet'sthelatteritii *xiiecomin loose and insures their engagementthe sf-rewthreads. i,

Those deviceshave, serious disadvantages.

In the first mentioned case the screwthreads of each half of the nut donot provide a suitable bearing upon the screwthreads ot the rods whichresults in frequent stripping of the screwthreads by the effect of theJforces, which are transmitted alternately by the rods.

In the second case, the engagement of the nut in the screwthreads of therods is an extremely delicate and laborious operation, especially in thecase of rods of large diameter, requiring very heavy nuts which areconsequently not convenient to handle, as is the case for instance withhigh-powered gas engines of the double-acting tandem type.

ln both cases the adjustment of the ends of the rods, and consequentlythe position of the pistons in the cylinders, cannot be ef tected towithin one screvvthread, Which is a much too large amount, especially inthe rase ot large screwthreads.

The improved apparatus forming the subita-Iz matter oi' the presentinvention overcomes illi- :lfOl'eStutd disadvantages; it iS illustratedin the accompanying drawings in which:

Fig'. l is a longitudinal section;

Fig. 2 a cross section, and

Fig. :5 plan thereof.

lt comprises essentially two similar nuts A and A1v of the saine pitch,adapted to screw on the ends of the rods B and B1. These nuts are'formed with nibs a and al Specification of Letters Patent.

Application tiled` July 21,

er@ nut hav-Y lfftehfed, .Feh- 44.; 1???- 1920. Serial No. 397,955.

tion of its ,thickness @here the eiseres i le i ih the diretioh'i theirCllnthi The Whole is held rigid-i in plee@ hy eh assembling SleeveComposed Q'f D1 that are firmly fastened i E fwd are pierna@ withenemies.. resse ,e 0f the veda@ C, @se et@ ef allerh- Sees 'adapted t0take the el, greetings 1 S transmitted' through the rede he iii i D D1serves et ehhh-ment lip ,tip er and l vhie, his Llilies-fief. hay lu'.the @Geiel vrede@ ,C Gerth@ @he ege naar t. e Sleeve, eli-d Oh thefitllerllieh esame it e srrevvthreads of the rods.

With an apparatus of this kind the adjustment of the rods is anextremely easy operation, and can be assured to Within a fraction of aserewthread in the eX- ample shown) by rotating one or the other of thenuts.

This apparatus is moreover very easy t0 erect.

The nuts which are very readily handled, having been screwed on theirrods in a position previously marked, it is sufficient to bring the endsof the rods towards each other to be able to engage freely the sleevecomposed oirtwo parts D, D1.

The insertion of the wedge C1 forces the rods apart, and thus causes thenuts t0 bear against the sleeve, thereby insuring the locking of theWhole.

ln cases Where it is necessary to have a slide shoe for the purpose ofsupport, it Will be advisable to fix this shoe to the sleeve, utilizingfor this purpose the two bolts that connect together the tivo parts ofthe said sleeve, as indicated in dot-and-dash lines in Fig. 2.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be per formed, l declarethat what I claim is l. ln an apparatus for assembling piston rods` thecombination of a pair of opposed rods arranged in alignment, grooves inthe .maneras t r,

e vlo s adjacent ends of said rods, a pair of members having threaded.engagement with said rods at adjacent .ends thereof, the opposed facesof each member being formed with a plurality of spaoedprojections, meanscoacting with and forming an abutment for said members, and.. lockingmeans for said rods engaging in said grooves and aligned spaces betweensaid projections.

2. In an apparatus for assembling piston rods transmitting alternatingstrains, the combination of a pair of opposed rods ai'- ranged inalignment, grooves in opposed ends of said rods, a' pair of membershaving threaded engagement with said rodsat the opposed ends thereof,the adjacent faces of each member being ormedvvith a plurality of spacedprojections,a two-:part ,sleeve surrounding and forming* an abutment forsaid member, one part ofsaid sleeve carr ing a slide block adaptedtoform a support ior the rods, and locking means for said 'rods engagingin said grooves and aligned spaces between said projections.

3. In an apparatus for assembling piston rods, theco'mbination of a pairof opposed rods arranged in alignment, inclined grooves inthe opposedends of said rods, a pair of nuts having threaded engagement with saidrods at the adjacent ends thereof, the opposed 'facs of said nuts eachbeing provided with a plurality of spaced projections, the

spaces between said projections being of greater width than the groovesin sa-idrods, means surrounding and forming an abutment for said nuts,and a Wedge-shaped key engaging in said inclined grooves and alignedspaces between said projections whereby rel ative rotation between saidrods is prevented.

4. In an apparatus for assembling piston rods transmitting alternatingstrains, the combination of a pair of opposed screw threaded rodsarranged in alignment and each havin an end groove, a pair of membersengaging said threaded rods and each provided with angularly arrangednibs, the spaces between said nibs bein adapted to register with the endgrooves in said rods, means surrounding and forming an abutment for saidmembers, and means for locking said rods and members in differentangular positions, said means being adapted to engage said grooves andaligned spaces between said projections, whereby adjustment of said rodsmay be effected to a fraction of the pitch of their respective screwthreads.

Dated this 27th day of May, 1920.

In testimony whereof I have signed this specification.

EUGENE SCHNEIDER.

Witnesses:

ANDR Mos'rIoKEii, CLEMENT S. EDWARDS.

